It's not a bloody overreaction. A doctor who used to treat me when I was a kid died from SARS, so did his wife, and they weren't old, or feeble. Have some respect. Although I agree that AIDS is a much bigger problem, SARS could have been a lot worse if people did not react. And people (i.e. HK government etc.) had reacted quicker, fewer people would have suffered.
On the bright side, SARS did make Hong Kong a much cleaner place now since everyone is more conscious about hygiene.